Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Class A [Member]	Common Class B [Member]	Total
Balance (in shares) at Jan. 31, 2019			16,605	3,537	(515)
Balance at Jan. 31, 2019	$ (173)	$ (173)	$ 16	$ 4	$ (7,350)	$ 196,723	$ (48,485)	$ (7,661)			$ 133,247
Net loss							(16,484)		$ (14,152)	$ (2,332)	(16,484)
Foreign currency translation adjustments								35			35
Stock award exercises					$ 202	(357)					(155)
Stock compensation expense						5,492					5,492
Dividends declared ($0.144 and $0.12 per Class A and Class B share, respectively)							(2,761)				(2,761)
Restricted stock (in shares)					174
Restricted stock					$ 2,205	(5,546)					(3,341)
Stock award exercises (in shares)					9
Balance (in shares) at Jul. 31, 2019			16,605	3,537	(332)
Balance at Jul. 31, 2019			$ 16	$ 4	$ (4,943)	196,312	(67,903)	(7,626)			115,860
Balance (in shares) at Jan. 31, 2020			17,109	3,537	(216)
Balance at Jan. 31, 2020			$ 17	$ 4	$ (3,226)	197,824	(70,209)	(8,345)			116,065
Net loss							(350)		$ (301)	$ (49)	(350)
Foreign currency translation adjustments								(1,048)			(1,048)
Stock award exercises						(2,576)					(2,423)
Stock compensation expense						6,356					6,356
Dividends declared ($0.144 and $0.12 per Class A and Class B share, respectively)							(2,879)				(2,879)
Restricted stock (in shares)			183
Restricted stock						(3,519)					(3,519)
Balance (in shares) at Jul. 31, 2020			17,365	3,537	(207)
Balance at Jul. 31, 2020			$ 17	$ 4	$ (3,073)	$ 198,085	$ (73,438)	$ (9,393)			$ 112,202